Also like to add that after failing to respond. The hotkey menu will
attached to the active application and the hotkey menu cannot be
closed or removed. The application has to be shut down to destroy the
menu.
Not sure if this is related or should I file another bug?

Comfirmed most of the issue such as:
1) responding to arrow keys
2) accept RETURN after entry highlight
However, slight issue, hotkey menu now has some problem accepting
Numeric selection. Hence, to select CannaLE, one has to enter 1
(committed to the application, not very ideal) followed by BACKSPACE.